Rorippa aquatica(Eaton) E.J.Palmer & Steyerm.

lakecress

WFO wfo-0000399558 Accepted WFO 2026-06 4 photographs CC0 / CC BY

Plate 1 figs. a–d · 3 observations

This species has been photographed under an open licence only 3 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Rorippa aquatica, photographed by Allan Harris
fig. a Allan Harris, CC0 1.0 / 2014-08-15 / obs. 71211251
Rorippa aquatica, photographed by Allan Harris
fig. b Allan Harris, CC0 1.0 / obs. 13732807
Rorippa aquatica, photographed by Allan Harris
fig. c Allan Harris, CC0 1.0 / obs. 71211426
Rorippa aquatica, photographed by Sam Turner
fig. d Sam Turner, CC BY 4.0 / obs. 74608602

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Also published as 9 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Armoracia aquatica (Eaton) Wiegand
  • Armoracia lacustris (A.Gray) Al-Shehbaz & V.M.Bates
  • Cochlearia aquatica (Eaton) Eaton
  • Cochlearia armoracia var. aquatica Eaton
  • Nasturtium lacustre A.Gray
  • Nasturtium natans var. americanum A.Gray
  • Neobeckia aquatica (Eaton) Greene
  • Radicula aquatica (Eaton) B.L.Rob.
  • Rorippa americana Britton

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. USDA PLANTS Database. common name, checklist symbol NEAQ2. public domain. Retrieved 2026-07-13.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.